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29 Cards in this Set
- Front
- Back
Mill tolerance for rolled and welded pipe |
-0.010 inches |
|
Maximum allowed length of crack or lack of fusion in new welds |
0 inches |
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Typical flanges face finish |
125 to 250 micro inch |
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When mating flanges, the maximum amount of unparallel allowed (per diameter of flange in feet) |
1/16”/ft |
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Minimum size of fillet weld on socket weld pipe |
1/8 inch |
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Maximum offset for bolt holes for mating flanges (two-hole) |
1/8 inch |
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Maximum allowed size of open discontinuity in a bend test |
1/8” |
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Preheat zone – distance from toe of weld |
1 inch |
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PWHT zone-distance from toe of weld |
1 inch |
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Minimum distance beyond the area to be examined to clean a part when performing a PT examination |
1 inch |
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Minimum distance beyond the area to be examined to clean a part when performing a MT examination |
1 inch |
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Minimum radius on patches (both fillet and flush) |
1” (8.1.4.2.c/Fig C.2) |
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Maximum diameter of TML test point for lines less than or equal to10 NPS |
2” (3.1.20) |
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Maximum distance between examiners eye and component during VT exam |
24” (V-T-952) |
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Maximum length of RT when qualifying a welding operator with RT of first production weld |
36” (3ft) (IX-QW-305.1) |
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Minimum length of buried pipe to expose when excavating for inspection |
6-8’ (9.3.6) |
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Maximum size of fillet weld patch on pipe |
1/2 diameter (Fig C.2) |
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Minimum upstream limit of injection point circuit |
Greater of: 12” or 3 Dia (5.5.9) |
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Minimum downstream limit of intensive examination of injection point circuit |
10 diameters (5.5.9) |
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Minimum downstream limit of injection point circuit |
Lesser: 1st direction Chg + 25’ or 2nd direction chg |
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Maximum diameter of TML test point for lines greater than 10 NPS |
3” (3.1.20) |
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Minimum length of spot RT |
6” (31.3-344.5.2.c) |
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Minimum length of RT went qualifying a welder with RT |
6” (IX-QW-302.2/304.1) |
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Distance to dig when inspecting for soil – two Dash air corrosion |
6” (IX-QW-302.2) |
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Limits of Soil to-Air area – distance in air away from interface |
6” (3.1.87) |
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Distance to dig when inspecting for Soil to-Air corrosion |
6”-12” (574-7.4.5) |
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Limits of Soil-to-Air area distance in soil away from interface |
12” (3.1.87) |
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Minimum upstream limit of intensive examination of injection point circuit |
12” (5.5.9) |
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Minimum overlap when performing PWHT using multiple heats |
12” (ft) (31.3-331.2.5) |